基于某装载机高原环境下NOx排放的模拟研究
Simulation Study on NOx Emissions from A Certain Loader in a High-altitude Environment
王小雷 1王勇 2翟军强 2冯磊 1江先锋 1王宁峰3
作者信息
- 1. 青海大学机械工程学院,青海 西宁 810016
- 2. 青海省高原科技发展有限公司,青海 西宁 810016;青海省内燃机动力机械高原动力和排放重点实验室,青海 西宁 810016
- 3. 青海大学化工学院,青海 西宁 810016
- 折叠
摘要
为了探讨工程机械在高原环境下的燃烧排放特性,本文以某装载机柴油发动机为原型,建立高原环境下的数值计算模型,研究该柴油机在高原环境下的燃烧排放特性.结果表明:NOx的产生与发动机缸内温度密切相关.且当发动机转速不变时,随着海拔的上升,发动机NOx的排放有着先上升后下降的趋势;当海拔不变时,发动机转速提高,其NOx的排放也逐渐增加.
Abstract
In order to explore the combustion emission characteristics of construction machinery in high-alti-tude environments,this paper takes a diesel engine of a certain loader as a prototype,establishes a numerical cal-culation model in high-altitude environments,and studies the combustion emission characteristics of the diesel engine in high-altitude environments.The results indicate that the generation of NOx is closely related to the temperature inside the engine cylinder.And when the engine speed remains constant,as the altitude increases,the NOx emissions from the engine show a trend of first increasing and then decreasing;When the altitude re-mains constant,the engine speed increases and its NOx emissions gradually increase.
关键词
装载机/柴油机/高原环境/NOx排放/数值模拟Key words
Loader/Diesel engine/Plateau environment/NOx emissions/Numerical simulation引用本文复制引用
基金项目
青海省科学技术厅项目(2019-GX-A6)
出版年
2024
NETL
NSTL
万方数据